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Finding the Fourth Proportional to 300,405.48, 414,555.78 and 164,438.88

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Solution

The fourth proportional to 300,405.48, 414,555.78 and 164,438.88 is: 226,923.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,405.48 : 414,555.78 = 164,438.88 : x
  2. Step 2: Convert to fraction form
    300,405.48/414,555.78 = 164,438.88/x
  3. Step 3: Cross multiply
    300,405.48x = 414,555.78 × 164,438.88
  4. Step 4: Simplify right side
    300,405.48x = 68,169,088,160.73
  5. Step 5: Solve for x
    x = 68,169,088,160.73/300,405.48
  6. Step 6: Final answer
    x = 226,923.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.